<?php
/**
 * Copyright (c) 2008 Derdubor A/S
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

class Keepitclose_Storage
{
    protected $registeredModules = array();

    public function __construct($config)
    {
        foreach($config as $storageName => $definedDestinations)
        {
            require_once 'Keepitclose/Storage/' . ucfirst($storageName) . '.php';
            
            $className = 'Keepitclose_Storage_' . ucfirst($storageName);
            
            try
            {
                call_user_func($className . '::isSupported');
            }
            catch (Exception $e)
            {
                throw $e;
            }
            
            $storageModule = new $className($definedDestinations);
            $this->addModule($storageModule);
        }
    }
    
    protected function addModule($module)
    {
        $this->registeredModules[] = $module;
    }
    
    protected function getModules()
    {
        return $this->registeredModules;
    }
    
    public function get($key)
    {
        foreach($this->getModules() as $storageModule)
        {
            try
            {
                return $storageModule->get($key);
            }
            catch (Exception $e)
            {
                continue;
            }
        }
        
        return false;
    }
    
    public function set($key, $data, $ttl = 0)
    {
        foreach($this->getModules() as $storageModule)
        {
            try
            {
                return $storageModule->set($key, $data, $ttl);
            }
            catch (Exception $e)
            {
                continue;
            }
        }
        
        return false;
    }
}